Return-Path: Received: from us-smtp-delivery-194.mimecast.com ([216.205.24.194]:46810 "EHLO us-smtp-delivery-194.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756936AbcJaQLI (ORCPT ); Mon, 31 Oct 2016 12:11:08 -0400 From: Trond Myklebust To: Sebastian Andrzej Siewior CC: Schumaker Anna , List Linux NFS Mailing , List Linux Kernel Mailing , "tglx@linutronix.de" Subject: Re: [PATCH v3] NFSv4: replace seqcount_t with a rw_semaphore Date: Mon, 31 Oct 2016 16:11:02 +0000 Message-ID: <40147FA4-9FD8-4349-B309-751DFCE875A2@primarydata.com> References: <20161021164727.24485-1-bigeasy@linutronix.de> <20161028210511.k7hrsfxovti7gqtu@linutronix.de> <747E2CCB-3D83-40FD-8B31-46AB5A5E8592@primarydata.com> <20161031131958.mrrez5t7sow75p6v@linutronix.de> <51E3F753-2D1F-4370-BFEB-BD8356D622A1@primarydata.com> <20161031155616.fqbqy53bwpanufhn@linutronix.de> In-Reply-To: <20161031155616.fqbqy53bwpanufhn@linutronix.de> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Sender: linux-nfs-owner@vger.kernel.org List-ID: DQo+IE9uIE9jdCAzMSwgMjAxNiwgYXQgMTE6NTYsIFNlYmFzdGlhbiBBbmRyemVqIFNpZXdpb3Ig PGJpZ2Vhc3lAbGludXRyb25peC5kZT4gd3JvdGU6DQo+IA0KPiBPbiAyMDE2LTEwLTMxIDE1OjMw OjAyIFsrMDAwMF0sIFRyb25kIE15a2xlYnVzdCB3cm90ZToNCj4+PiBPbiBPY3QgMzEsIDIwMTYs IGF0IDA5OjE5LCBTZWJhc3RpYW4gQW5kcnplaiBTaWV3aW9yIDxiaWdlYXN5QGxpbnV0cm9uaXgu ZGU+IHdyb3RlOg0KPj4+IFRoZSBsaXN0X2Zvcl9lYWNoX2VudHJ5KCkgaW4gbmZzNF9yZWNsYWlt X29wZW5fc3RhdGU6DQo+Pj4gSXQgc2VlbXMgdGhhdCB0aGlzIGxvY2sgcHJvdGVjdHMgdGhlIC0+ c29fc3RhdGVzIGxpc3QgYW1vbmcgb3RoZXINCj4+PiBhdG9taWNfdCAmIGZsYWdzIG1lbWJlcnMu IFNvIGF0IHRoZSBiZWdpbiBvZiB0aGUgbG9vcCB3ZSBpbmMgLT5jb3VudA0KPj4+IGVuc3VyaW5n IHRoYXQgdGhpcyBmaWVsZCBpcyBub3QgcmVtb3ZlZCB3aGlsZSB3ZSB1c2UgaXQuIFNvIHdlIGRy b3AgdGhlDQo+Pj4gLT5zb19sb2NrIGxvYyBkdXJpbmcgdGhlIGxvb3AgaXQgc2VlbXMuIEFuZCBh ZnRlciBuZnM0X3JlY2xhaW1fbG9ja3MoKQ0KPj4+IGludm9jYXRpb24gd2UgbmZzNF9wdXRfb3Bl bl9zdGF0ZSgpIGFuZCBncmFiIHRoZSAtPnNvX2xvY2sgYWdhaW4uIFNvIGlmDQo+Pj4gd2Ugd2Vy ZSB0aGUgbGFzdCB1c2VyIG9mIHRoaXMgc3RydWN0IGFuZCB3ZSByZW1vdmUgaXQsIHRoZW4gdGhl DQo+Pj4gZm9sbG93aW5nIGxpc3RfbmV4dF9lbnRyeSgpIGludm9jYXRpb24gaXMgYSB1c2UtYWZ0 ZXItZnJlZS4gRXZlbiBpZiB3ZQ0KPj4+IHVzZSBsaXN0X2Zvcl9lYWNoX2VudHJ5X3NhZmUoKSB0 aGVyZSBpcyBubyBndWFyYW50ZWUgdGhhdCB0aGUgZm9sbG93aW5nDQo+Pj4gbWVtYmVyIGlzIHN0 aWxsIHZhbGlkIGJlY2F1c2UgaXQgbWlnaHQgaGF2ZSBiZWVuIHJlbW92ZWQgYnkgc29tZW9uZQ0K Pj4+IGludm9raW5nIG5mczRfcHV0X29wZW5fc3RhdGUoKSBvbiBpdCwgcmlnaHQ/DQo+Pj4gU28g dGhlcmUgaXMgdGhpcy4NCj4+PiANCj4+PiBIb3dldmVyIHRvIGFkZHJlc3MgbXkgaW5pdGlhbCBw cm9ibGVtIEkgaGF2ZSBoZXJlIGEgcGF0Y2ggOikgU28gaXQgdXNlcw0KPj4+IGEgcndfc2VtYXBo b3JlIHdoaWNoIGVuc3VyZXMgdGhhdCB0aGVyZSBpcyBvbmx5IG9uZSB3cml0ZXIgYXQgYSB0aW1l IG9yDQo+Pj4gbXVsdGlwbGUgcmVhZGVyLiBTbyBpdCBzaG91bGQgYmUgYmFzaWNhbGx5IHdoYXQg aXMgaGFwcGVuaW5nIG5vdyBwbHVzIGENCj4+PiB0aW55IHRpbnkgdGlueSBsb2NrIHBsdXMgbG9j a2RlcCBjb3ZlcmFnZS4gSSB0cmllZCB0byB0aGlzIG15c2VsZiBidXQgSQ0KPj4+IGRvbid0IG1h bmFnZSB0byBnZXQgaW50byB0aGlzIGNvZGUgcGF0aCBhdCBhbGwgc28gSSBtaWdodCBiZSBkb2lu Zw0KPj4+IHNvbWV0aGluZyB3cm9uZy4NCj4+PiANCj4+PiBDb3VsZCB5b3UgcGxlYXNlIGNoZWNr IGlmIHRoaXMgcGF0Y2ggaXMgd29ya2luZyBmb3IgeW91IGFuZCB3aGV0aGVyIG15DQo+Pj4gbGlz dF9mb3JfZWFjaF9lbnRyeSgpIG9ic2VydmF0aW9uIGlzIGNvcnJlY3Qgb3Igbm90Pw0KPj4+IA0K Pj4+IHYy4oCmdjM6IHJlcGxhY2UgdGhlIHNlcWxvY2sgd2l0aCBhIFJXIHNlbWFwaG9yZS4NCj4+ PiANCj4+IA0KPj4gTkFDSy4gVGhhdCB3aWxsIGRlYWRsb2NrLiBUaGUgcmVhc29uIHdoeSB3ZSB1 c2UgYSBzZXFsb2NrIHRoZXJlIGlzIHByZWNpc2VseSBiZWNhdXNlIHdlIGNhbm5vdCBhbGxvdyBv cmRpbmFyeSBSUEMgY2FsbHMgdG8gbG9jayBvdXQgdGhlIHJlY292ZXJ5IHRocmVhZC4gDQo+IEht bW0uIFNvIHRoaXMgaXMgZ2V0dGluZyBpbnZva2VkIGlmIEkgcmVib290IHRoZSBzZXJ2ZXI/IEEg cmVzdGFydCBvZg0KPiBuZnMta2VybmVsLXNlcnZlciBpcyB0aGUgc2FtZSB0aGluZz8NCj4gSXMg dGhlIGxpc3RfZm9yX2VhY2hfZW50cnkoKSBvYnNlcnZhdGlvbiBJIG1hZGUgY29ycmVjdD8NCg0K WWVzLCBhbmQgeWVzLiBXZSBjYW7igJl0IHJlbHkgb24gdGhlIGxpc3QgcG9pbnRlcnMgcmVtYWlu aW5nIGNvcnJlY3QsIHNvIHdlIHJlc3RhcnQgdGhlIGxpc3Qgc2NhbiBhbmQgd2UgdXNlIHRoZSBv cHMtPnN0YXRlX2ZsYWdfYml0IHRvIHNpZ25hbCB3aGV0aGVyIG9yIG5vdCBzdGF0ZSBoYXMgYmVl biByZWNvdmVyZWQgZm9yIHRoZSBlbnRyeSBiZWluZyBzY2FubmVkLg0KDQo+IA0KPj4gSWYgdGhl IHNlcnZlciByZWJvb3RzLCB0aGVuIG9yZGluYXJ5IFJQQyBjYWxscyB3aWxsIGZhaWwgdW50aWwg dGhlIHJlY292ZXJ5IHRocmVhZCBoYXMgaGFkIGEgY2hhbmNlIHRvIHJlLWVzdGFibGlzaCB0aGUg c3RhdGUuDQo+IA0KPiBUaGlzIG1lYW5zIHRoYXQgdGhlIG9yZGluYXJ5IFJQQyBjYWxsIHdvbid0 IHJldHVybiBhbmQgZmFpbCBidXQgd2FpdA0KPiB3aXRoIHRoZSBsb2NrIGhlbGQgdW50aWwgdGhl IHJlY292ZXJ5IHRocmVhZCBkaWQgaXRzIHRoaW5nPw0KDQpJdCB1c2VzIHRoZSBzZXFjb3VudF90 IHRvIGZpZ3VyZSBvdXQgaWYgYSByZWNvdmVyeSBvY2N1cnJlZCB3aGlsZSBhbiBPUEVOIG9yIENM T1NFIHdhcyBiZWluZyBwcm9jZXNzZWQuIElmIHNvLCBpdCBzY2hlZHVsZXMgYSBuZXcgcmVjb3Zl cnkgb2YgdGhlIHN0YXRlaWRzIGluIHF1ZXN0aW9uLg==